Lars von Trier's latest shocker is extremely beautiful in places. Its black and white opening, shot with digital cameras at 1,000 frames per second, indelibly records the death of the young son of Willem Dafoe and Charlotte Gainsbourg, falling out of the window in the snow while his parents are having sex. The rest of the film is in three sections: grief, pain and despair, as the pair move to a cabin in the woods, and have a very Old Testament time of it. Dafoe, playing a therapist, tries to theorise his way through the couple's problems, surrounded by nature in the raw and horror that at times recalls Hieronymus Bosch in its unpitying extremity. Von Trier has given us everything from the risible to the sublime in the past - and there are aspects of both here - but he's never made a boring or ordinary film, and long may that last.